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Manley .650" NexTek Valve Springs Set of 16 w/ Valve Locks Chrysler Hemi 6.4L
$446.28
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Manley .650" NexTek Valve Springs Set - Performance Meets Precision

If you're looking to boost your Chrysler Hemi 6.4L's performance, the Manley .650" NexTek Valve Springs Set of 16 with Valve Locks is a fantastic choice. Designed with the enthusiast in mind, these valve springs are crafted from a super clean alloy that ensures durability and longevity, even under high lift camshaft applications.

Key Features

  • Max Valve Lift: .650"
  • Outer Diameter: 1.076" (Top), 1.311" (Bottom)
  • Inner Diameter: .650" (Top), .885" (Bottom)
  • Installed/Open Pressure: 145 lbs @ 1.811", 370 lbs @ 1.161", 380 lbs @ 1.150"
  • Spring Rate: 353 lbs/in
  • Coil Bind: 1.100"

Unmatched Precision

Every component of the Manley valve springs is crafted with precision in mind. The retainers are produced using advanced double spindle CNC machines to meet exact tolerances and installed height specifications. This means you can trust that your setup will perform reliably and efficiently.

Durable and Reliable Construction

These valve springs undergo heat treatment and black oxide finishing after machining, enhancing their resilience. The valve locks are manufactured in Swiss turning centers, ensuring a perfect fit with the retainers thanks to rigorous control over the critical angles.

Perfect Fit for Your Chrysler Hemi 6.4L

This valve spring set is specifically designed for the Chrysler Hemi 6.4L, making it an ideal upgrade for those looking to enhance their engine's capabilities. With a set of 16 springs included, you have everything you need to make a significant improvement in performance.

Customer Feedback

Customers have praised the Manley .650" NexTek Valve Springs for their robust construction and performance gains. Many have noted noticeable improvements in engine responsiveness and efficiency after installation. Here’s what some users are saying:

  • "These springs are a game changer for my Hemi! The engine feels much more powerful and responsive." - Satisfied Customer
  • "Installation was straightforward, and the quality is top-notch. Highly recommend!" - Performance Enthusiast
  • "I noticed a significant difference in my car's performance after upgrading to these springs." - Happy Driver

Specifications Recap

To sum it up, here are the specifications for the Manley .650" NexTek Valve Springs Set 221439-16:

  • Max Valve Lift: .650"
  • O.D.: 1.076" Top, 1.311" Bottom
  • I.D.: .650" Top, .885" Bottom
  • Installed/Open Pressure: 145 @ 1.811", 370 @ 1.161", 380 @ 1.150"
  • Rate (lbs/in): 353
  • Coil Bind: 1.100"
  • Fitment: Chrysler Hemi 6.4L
  • Sold as a Set of 16

Upgrade your Chrysler Hemi 6.4L with the Manley .650" NexTek Valve Springs Set and experience the difference in performance and reliability!

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How did Manley Performance Start?

Manley Performance, formerly called Manley Speed Equipment, was established in 1966 by Hank Manley shortly after his graduation from Brown University. His interest in the performance and racing traced back to 1960 when, at age 17, he rebuilt a 312 CID Ford V8 engine, installed a camshaft and three two-barrel carbs, and raced a ’56 Thunderbird on New Jersey’s streets. Initially, the company’s product lineup included stainless valves, lifters, camshafts, forged pistons, vanadium valve springs, pushrods, and timing chain kits. By 1998, Manley had outgrown its first Bloomfield, New Jersey facility and bought several acres in Lakewood, New Jersey. It was around this time that the brand’s name formally changed to Manley Performance. Nearly a decade later, the production space doubled in size.

Evolving in the Automotive Space

Led by GM Michael Tokarchik in 2002, Manley entered the high-performance passenger car market as an OEM supplier of connecting rods for the 2003/2004 Ford SVT Mustang Cobra. Production reached 2500 rods per week without missing a single delivery date. Ford awarded Manley its highest ever supplier rating. Manley’s presence in the OEM market continued from there as a supplier for the Ford GT. After nearly 50 years since its inception, Manley continues to be globally recognized as the leading manufacturer of performance valves, connecting rods, cylinder head components, pushrods, drive and oil systems, and several other engine parts.

What is Manley’s Specialty?

Manley Performance specializes in high-performance engine internals that range from stock replacements to full-on race applications. They have been the standard of the industry since their inception; a fact that still remains true now as they have ventured into new markets. Today, Manley Performance continues to re-define itself in a high-performance aftermarket industry that is constantly evolving. The brand has developed a wide range of new products for growing markets that include sport compact, Ford modular, and Chevy LS. Manley also maintains its leadership role with the traditional V8 engine business.

Get Manley Performance at Vivid Racing

If you are in need of a serious upgrade to your engine, then Manley Performance parts should be on your list. Like all of our suggested manufacturers, Manley uses the best materials available to ensure a quality part for your engine. We carry Manley connecting rods, crankshafts, pistons, and valve components. The large lineup of domestic parts includes sport compact vehicles, Ford modular engines, GM’s LS series internals, and HEMI product upgrades for Chrysler.

If you can’t find what you’re looking for or need help choosing the right part for your car, call our sales team at (480) 966-3040. We are here to make your buying experience a breeze.

Due to the intended usage of the products sold by Manley Performance Products, Inc., they are sold WITHOUT WARRANTY OR ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR THE INTENDED PURPOSE. Manley Performance Products, Inc. shall not, under any circumstances, be liable for any special, consequential or incidental damages, including but not limited to loss of profits or revenue, loss of other property or equipment, cost of purchased or replacement of goods, or claims by customers of the purchaser, which may arise and/or result from the sale, installation or use of these parts. Installation of parts intended for “off-highway” use could adversely affect the vehicle manufacturer’s warranty coverage. Subject to applicable state law. Some items may not be legal for use in California on pollution controlled vehicles. All weights specified are approximate and subject to manufacturing tolerances. Manley Performance Products, Inc. reserves the right to make changes in design, specifications, materials, or make product changes without incurring liability or obligation with respect to similar product previously manufactured. If technical advice is offered or given in connection with the use of any Products it will be as an accommodation to Buyer and without charge and Seller shall have no responsibilities or liabilities whatsoever for the content or use of such advice.

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